Vibration generator



FIG. 1 is a front view of the vibration generator of the present invention;

FIG. 2 is a rear view thereof;

FIG. 3 is a right side view thereof;

FIG. 4 is a plan view thereof;

FIG. 5 is a bottom view thereof;

FIG. 6 is a cross-sectional view taken along line 6—6 of FIG. 1; and,

FIG. 7 is a prospective view thereof. 

The ornamental design for a vibration generator, as shown and described. 